| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.openjpa.instrumentation; |
| |
| import java.util.Date; |
| import java.util.Map; |
| |
| import org.apache.openjpa.datacache.CacheStatistics; |
| import org.apache.openjpa.datacache.CacheStatisticsSPI; |
| import org.apache.openjpa.datacache.DataCache; |
| import org.apache.openjpa.datacache.DataCacheManager; |
| import org.apache.openjpa.lib.instrumentation.AbstractInstrument; |
| import org.apache.openjpa.lib.instrumentation.InstrumentationLevel; |
| |
| /** |
| * Provides a basic instrument implementation wrapper for the data cache. This class can be extended to create a |
| * provider specific instrument for the data cache. |
| */ |
| public abstract class AbstractDataCacheInstrument extends AbstractInstrument implements DataCacheInstrument { |
| |
| /** |
| * Value indicating that cache statistics are not available. |
| */ |
| public static final long NO_STATS = -1; |
| |
| private DataCacheManager _dcm = null; |
| private DataCache _dc = null; |
| private String _configID = null; |
| private String _configRef = null; |
| |
| public void setDataCache(DataCache dc) { |
| _dc = dc; |
| } |
| |
| public void setDataCacheManager(DataCacheManager dcm) { |
| _dcm = dcm; |
| } |
| |
| public void setConfigId(String cid) { |
| _configID = cid; |
| } |
| |
| public void setContextRef(String cref) { |
| _configRef = cref; |
| } |
| |
| @Override |
| public long getHitCount() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getHitCount(); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getReadCount() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getReadCount(); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getTotalHitCount() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getTotalHitCount(); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getTotalReadCount() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getTotalReadCount(); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getTotalWriteCount() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getTotalWriteCount(); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getWriteCount() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getWriteCount(); |
| return NO_STATS; |
| } |
| |
| @Override |
| public void reset() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| stats.reset(); |
| } |
| |
| @Override |
| public Date sinceDate() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.since(); |
| return null; |
| } |
| |
| @Override |
| public Date startDate() { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.start(); |
| return null; |
| } |
| |
| public String getConfigId() { |
| return _configID; |
| } |
| |
| public String getContextRef() { |
| return _configRef; |
| } |
| |
| @Override |
| public String getCacheName() { |
| if (_dc != null) |
| return _dc.getName(); |
| return null; |
| } |
| |
| private CacheStatistics getStatistics() { |
| if (_dc != null) { |
| return _dc.getStatistics(); |
| } |
| return null; |
| } |
| |
| @Override |
| public long getWriteCount(String c) { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getWriteCount(c); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getTotalWriteCount(String c) { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getTotalWriteCount(c); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getTotalReadCount(String c) { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getTotalReadCount(c); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getTotalHitCount(String c) { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getTotalHitCount(c); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getReadCount(String c) { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getReadCount(c); |
| return NO_STATS; |
| } |
| |
| @Override |
| public long getHitCount(String c) { |
| CacheStatistics stats = getStatistics(); |
| if (stats != null) |
| return stats.getHitCount(c); |
| return NO_STATS; |
| } |
| |
| @Override |
| public InstrumentationLevel getLevel() { |
| return InstrumentationLevel.FACTORY; |
| } |
| |
| @Override |
| public void cache(String className, boolean enable) { |
| if (enable) { |
| _dcm.startCaching(className); |
| } else { |
| _dcm.stopCaching(className); |
| } |
| } |
| |
| @Override |
| public Map<String, Boolean> listKnownTypes() { |
| return _dcm.listKnownTypes(); |
| } |
| @Override |
| public void collectStatistics(boolean enable) { |
| CacheStatisticsSPI stats = (CacheStatisticsSPI) _dc.getStatistics(); |
| if (enable) { |
| stats.enable(); |
| } else { |
| stats.disable(); |
| } |
| } |
| |
| @Override |
| public Boolean getStatisticsEnabled() { |
| CacheStatisticsSPI stats = (CacheStatisticsSPI) _dc.getStatistics(); |
| return stats.isEnabled(); |
| } |
| |
| @Override |
| public Map<String, long[]> getCacheStatistics() { |
| return _dc.getStatistics().toMap(); |
| } |
| @Override |
| public void clear() { |
| _dc.clear(); |
| } |
| } |